/**
 * Created by fcs on 2014/11/19.
 */

var divp8 = "<div style='background:red;width:100px;height:100px;position:absolute;top:0;margin-top:100px;margin-left:300px;' id='divp81'>probelem 8</div>";
$(window).load(function(){
    $(document.body).append(divp8);
});
function hideDiv(){
    //隐藏div
    $("#divp81").hide();
}
function showDiv(){
    //显示div
    $("#divp81").show();
}